"Use this codebook for text classification. Return your classifications in a table with one column for text number (the number preceding each text sample) and a column for each label. Use a csv format. This is the one category to identify in each text:  CRITICAL – code as 1 if the text expresses uncertainty, skepticism, doubt, criticism, concern, confusion, or disbelief about the scientific paper that it is linking to. Specifically, the text should be critical of the paper’s findings, data, credibility, novelty, contribution, or other scientific elements. It is not enough for the text to have a generally critical tone; the criticism must be specifically targeted at the paper being linked to. Even if the overall sentiment of the text is positive, code CRITICAL as 1 if there are expressions of uncertainty and doubt explicitly connected to the associated paper’s findings, data, credibility, novelty, contribution, or other scientific element. Including a question mark or posing questions alone does not warrant a CRITICAL=1 classification unless there is explicit doubt or criticism expressed about the paper’s contents. Saying things like “no doubt”, “shocker”, “surprised” or other phrases associated with uncertainty do not warrant a CRITICAL=1 classification unless there is explicit doubt or criticism expressed about the paper’s contents specifically. Expressing curiosity, interest, or wonder alone does not warrant a CRITICAL=1 classification unless there is explicit doubt or criticism expressed about the paper’s contents. Mentioning data or findings alone does not warrant a CRITICAL=1 classification unless there is explicit doubt or criticism expressed about the paper’s contents. Mentioning risk factors alone or controversy alone does not warrant a CRITICAL=1 classification unless there is explicit doubt or criticism expressed about the paper’s contents. Moreover, unless any of these directly criticize the paper itself, classify as 0: providing a link to a paper as a response to a claim, without directly criticizing the paper itself, discussing a problem and suggesting a solution without directly criticizing a specific paper, and identifying similarity between two papers without directly criticizing either paper. Again, to code as 1, the text should be critical of the paper’s findings, data, credibility, novelty, contribution, or other scientific elements. Code as 0 otherwise. Classify the following text samples: "